Dinesh Bhat created KUDU-1769:
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             Summary: Add a tool to garbage collect orphan data blocks
                 Key: KUDU-1769
                 URL: https://issues.apache.org/jira/browse/KUDU-1769
             Project: Kudu
          Issue Type: Task
          Components: tablet
            Reporter: Dinesh Bhat


There could be cases where we find orphan data blocks not referenced by any 
tablet metadata:
- Crash during a flush/compaction
- Crash during a tablet copy could orphan the data blocks copied so far.
- Bugs 

In such situations, it is useful to have a manual tool to delete all the orphan 
data blocks for which there are no metadata. 




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